Unconnected Lookup In this example, we understand the following: * How to configure the Unconnected Lookup? * How to combine the multiple tables using the Source Qualifier? * How to define and Initialize Mapping Parameters? A mapping parameter represents a constant value that can be defined before a session taskis run. A mapping parameter retains…

What is ETL: – The ETL (Extraction, Transformation and Loading) process extracts data from different source systems and transforms it into a more consistent, standard formatteddata. This ETL process is done with the help of an ETL tool.Most widely used tools are Informatica, Data Stage, Ab Inito, Oracle Warehouse Builder etc. What is BI: –…

Lookup Transformation is used to lookup the data in flat file, relational table, views. TheIntegration service query‘s the lookup table based on the lookup ports in transformation. It works like LEFT OUTER JOIN in SQL. Lookup returns value when ever match is found and returns NULL value whenever there is no match found.Informatica Lookups can…

In this scenario, we understand how to generate target file withtimestamp. And also to generate the header and footer with UNIX or Batch Command 1. Create the Target File Definition using the Target Designer (EMPLOYEE_FF) Menu–>Targets–>Create—>Enter name and select Flat file from Drop Down. Edit the Target Definition, in columns tab, right corner click on…

In this example, we implement following scenarios: a. How to read the data from CSV flat file? b. Extracting the Source File Name into Target Table? Source: – TIME.txt TIME.txt Target: – ODS_TIME Transformations:- Filter Transformation: – This transformation is an active and connected transformation that can filter rows in mapping. Only the rows meet…

Expression Transformation Expression transformation is used to perform any Non-aggregate calculations, conditional statements for single row. For example you might need to adjust the employee salaries, concatenate first and last names, convert string to numbers. In this example we are Concatinating FIRST_NAME and LAST_NAME 1. Import the Source and target Definitions 2. Create a Mapping…

You have to assign row numbers to each record.Generate the row numbers either using the expression transformationas mentioned above or use sequence generator transformation.Then pass the output to filter transformation and specify the filter conditions as O_count

In the expression transformation, create a variable port and increment it by 1.Then assign the variable port to an output port.In the expression transformation, the ports are. V_count=V_count+1 O_count=V_count